Characteristics of the plant Cotinus coggygria Scop.
The plant Cotinus coggygria Scop. is a multiple-branching shrub from the Anacardiaceae family, growing up to 4 m tall with an open, spreading, irregular habit. The leaves are 3-10 cm long, rounded oval, green with a waxy glaucous sheen. It is common in dry and stony habitats, among brushes and in light oak forests in the warmer parts of the country. It contains tannic compounds, about 20% galotanins, flavonoid compounds and some organic acids.
In traditional medicine, a brew of Cotinus coggygria is used externally in treating festering wounds and catarrhs from different origin, and internally for mucosal health.*
The main active substances in the plant are tannins, they are heterogeneous chemical compound group, that generally induces protein coagulation by binding irreversible to them. This property is observed in the astringent effects of the products based on the plant.*
Definition: Produced from leaves of the plant Cotinus coggygria.
Characteristics: Light-brown to brown amorphous powder, with specific odour, slightly soluble in water and in ethanol 50%.
Identification: A, B A: Tannic compounds (tannins) – colour reaction B: Flavonoids – colour reaction
Testing for purity:
pH (0,10% solution): 3.8 to 5.0
Sulphated ash, %, not more than: 10.0
Heavy metals, %, not more than: 0.001
Loss on drying, %, not more than: 5.0
Content of active substancies:
Total polyphenols, determined as catechin, based on dry substance, %: 27.0 – 32.0
Flavonoids, determined as apigenin, based on dry substance, %: 15.0
Flavonoids, determined as quercetin, based on dry substance, %: 2.0
Control: The qualitative indices of the product are controled in accordance with company documentation, in which are included the assay methods and their validity concerning linearity and repetition.
Storage:At a temperature of 20 – 25oC.
Shelf life:3 (three) years from the date of production.
Application: It is used alone or in combination with other plant extracts in production of food or feed additives.